./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/interleave_bits.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/interleave_bits.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:28:25,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:28:25,505 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:28:25,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:28:25,511 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:28:25,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:28:25,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:28:25,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:28:25,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:28:25,551 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:28:25,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:28:25,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:28:25,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:28:25,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:28:25,555 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:28:25,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:28:25,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:28:25,556 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:28:25,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:28:25,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:28:25,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:28:25,561 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:28:25,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:28:25,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:28:25,562 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:28:25,562 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:28:25,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:28:25,562 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:28:25,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:28:25,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:28:25,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:28:25,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:28:25,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:28:25,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:28:25,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:28:25,564 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:28:25,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:28:25,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:28:25,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:28:25,565 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:28:25,565 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:28:25,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:28:25,567 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb [2024-10-10 22:28:25,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:28:25,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:28:25,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:28:25,839 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:28:25,840 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:28:25,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/interleave_bits.i [2024-10-10 22:28:27,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:28:27,469 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:28:27,470 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/interleave_bits.i [2024-10-10 22:28:27,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7b5cc0bdc/643332fd6b7d43d1aedee5ca5bc23241/FLAG07440890d [2024-10-10 22:28:27,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7b5cc0bdc/643332fd6b7d43d1aedee5ca5bc23241 [2024-10-10 22:28:27,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:28:27,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:28:27,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:28:27,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:28:27,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:28:27,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7d3b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27, skipping insertion in model container [2024-10-10 22:28:27,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:28:27,691 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/interleave_bits.i[1175,1188] [2024-10-10 22:28:27,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:28:27,744 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:28:27,755 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/interleave_bits.i[1175,1188] [2024-10-10 22:28:27,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:28:27,793 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:28:27,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27 WrapperNode [2024-10-10 22:28:27,794 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:28:27,795 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:28:27,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:28:27,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:28:27,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,848 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 235 [2024-10-10 22:28:27,849 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:28:27,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:28:27,850 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:28:27,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:28:27,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,879 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-10 22:28:27,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,889 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:28:27,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:28:27,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:28:27,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:28:27,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (1/1) ... [2024-10-10 22:28:27,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:28:27,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:27,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:28:27,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:28:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:28:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:28:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:28:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:28:28,072 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:28:28,075 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:28:29,619 INFO L? ?]: Removed 86 outVars from TransFormulas that were not future-live. [2024-10-10 22:28:29,621 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:28:29,646 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:28:29,646 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 22:28:29,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:28:29 BoogieIcfgContainer [2024-10-10 22:28:29,647 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:28:29,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:28:29,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:28:29,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:28:29,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:28:27" (1/3) ... [2024-10-10 22:28:29,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1f7448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:28:29, skipping insertion in model container [2024-10-10 22:28:29,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:28:27" (2/3) ... [2024-10-10 22:28:29,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1f7448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:28:29, skipping insertion in model container [2024-10-10 22:28:29,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:28:29" (3/3) ... [2024-10-10 22:28:29,654 INFO L112 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2024-10-10 22:28:29,667 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:28:29,668 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:28:29,717 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:28:29,723 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@662f9f70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:28:29,724 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:28:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 87 states have (on average 1.5747126436781609) internal successors, (137), 88 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-10 22:28:29,734 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:29,736 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:29,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:29,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash 514750692, now seen corresponding path program 1 times [2024-10-10 22:28:29,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:29,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329199718] [2024-10-10 22:28:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:29,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:30,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:30,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329199718] [2024-10-10 22:28:30,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329199718] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:28:30,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:28:30,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:28:30,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355383739] [2024-10-10 22:28:30,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:28:30,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:28:30,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:30,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:28:30,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:28:30,190 INFO L87 Difference]: Start difference. First operand has 89 states, 87 states have (on average 1.5747126436781609) internal successors, (137), 88 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:30,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:30,268 INFO L93 Difference]: Finished difference Result 196 states and 306 transitions. [2024-10-10 22:28:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:28:30,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-10 22:28:30,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:30,278 INFO L225 Difference]: With dead ends: 196 [2024-10-10 22:28:30,278 INFO L226 Difference]: Without dead ends: 106 [2024-10-10 22:28:30,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:28:30,283 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 27 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:30,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 248 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:28:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-10 22:28:30,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2024-10-10 22:28:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.5268817204301075) internal successors, (142), 93 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 142 transitions. [2024-10-10 22:28:30,315 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 142 transitions. Word has length 31 [2024-10-10 22:28:30,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:30,315 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 142 transitions. [2024-10-10 22:28:30,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 142 transitions. [2024-10-10 22:28:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-10 22:28:30,317 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:30,317 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:30,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:28:30,318 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:30,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:30,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1247634837, now seen corresponding path program 1 times [2024-10-10 22:28:30,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:30,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165911579] [2024-10-10 22:28:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:30,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:30,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:30,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165911579] [2024-10-10 22:28:30,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165911579] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:30,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391737511] [2024-10-10 22:28:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:30,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:30,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:30,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:30,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:28:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:30,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-10 22:28:30,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:30,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391737511] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:28:30,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:28:30,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-10 22:28:30,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252305366] [2024-10-10 22:28:30,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:28:30,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:28:30,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:28:30,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:28:30,840 INFO L87 Difference]: Start difference. First operand 94 states and 142 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:30,979 INFO L93 Difference]: Finished difference Result 237 states and 365 transitions. [2024-10-10 22:28:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 22:28:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-10-10 22:28:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:30,981 INFO L225 Difference]: With dead ends: 237 [2024-10-10 22:28:30,982 INFO L226 Difference]: Without dead ends: 151 [2024-10-10 22:28:30,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:28:30,985 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 188 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:30,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 527 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:28:30,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-10 22:28:31,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-10-10 22:28:31,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.52) internal successors, (228), 150 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:31,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 228 transitions. [2024-10-10 22:28:31,009 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 228 transitions. Word has length 41 [2024-10-10 22:28:31,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:31,009 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 228 transitions. [2024-10-10 22:28:31,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 228 transitions. [2024-10-10 22:28:31,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-10 22:28:31,013 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:31,014 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:31,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 22:28:31,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:31,220 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:31,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:31,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1906156544, now seen corresponding path program 1 times [2024-10-10 22:28:31,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:31,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459049190] [2024-10-10 22:28:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:31,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-10 22:28:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:31,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459049190] [2024-10-10 22:28:31,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459049190] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:31,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213439575] [2024-10-10 22:28:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:31,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:31,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:31,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:31,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:28:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:31,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 22:28:31,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-10 22:28:31,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-10 22:28:31,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213439575] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:28:31,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:28:31,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-10 22:28:31,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728385074] [2024-10-10 22:28:31,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:28:31,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-10 22:28:31,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:31,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-10 22:28:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-10 22:28:31,855 INFO L87 Difference]: Start difference. First operand 151 states and 228 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:31,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:31,984 INFO L93 Difference]: Finished difference Result 257 states and 391 transitions. [2024-10-10 22:28:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-10 22:28:31,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-10-10 22:28:31,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:31,987 INFO L225 Difference]: With dead ends: 257 [2024-10-10 22:28:31,987 INFO L226 Difference]: Without dead ends: 151 [2024-10-10 22:28:31,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:28:31,988 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 352 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:31,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 598 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:28:31,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-10 22:28:31,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-10-10 22:28:31,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.4933333333333334) internal successors, (224), 150 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 224 transitions. [2024-10-10 22:28:31,999 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 224 transitions. Word has length 75 [2024-10-10 22:28:31,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:31,999 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 224 transitions. [2024-10-10 22:28:32,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:32,000 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 224 transitions. [2024-10-10 22:28:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-10 22:28:32,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:32,001 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:32,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 22:28:32,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:32,203 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:32,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1139221696, now seen corresponding path program 2 times [2024-10-10 22:28:32,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:32,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621251014] [2024-10-10 22:28:32,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:32,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:32,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621251014] [2024-10-10 22:28:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621251014] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479982917] [2024-10-10 22:28:32,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:28:32,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:32,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:32,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:32,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:28:32,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:28:32,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:28:32,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-10 22:28:32,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:32,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:32,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479982917] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:28:32,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:28:32,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-10 22:28:32,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5268764] [2024-10-10 22:28:32,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:28:32,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-10 22:28:32,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-10 22:28:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-10-10 22:28:32,854 INFO L87 Difference]: Start difference. First operand 151 states and 224 transitions. Second operand has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:33,201 INFO L93 Difference]: Finished difference Result 347 states and 519 transitions. [2024-10-10 22:28:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-10 22:28:33,202 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-10-10 22:28:33,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:33,204 INFO L225 Difference]: With dead ends: 347 [2024-10-10 22:28:33,204 INFO L226 Difference]: Without dead ends: 283 [2024-10-10 22:28:33,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:28:33,206 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 757 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:33,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1288 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:28:33,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-10-10 22:28:33,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-10-10 22:28:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.475177304964539) internal successors, (416), 282 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 416 transitions. [2024-10-10 22:28:33,235 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 416 transitions. Word has length 77 [2024-10-10 22:28:33,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:33,236 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 416 transitions. [2024-10-10 22:28:33,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 416 transitions. [2024-10-10 22:28:33,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-10 22:28:33,242 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:33,243 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:33,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 22:28:33,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:33,444 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:33,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:33,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1789273578, now seen corresponding path program 3 times [2024-10-10 22:28:33,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:33,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291037928] [2024-10-10 22:28:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:33,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:34,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:34,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291037928] [2024-10-10 22:28:34,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291037928] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:34,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299551587] [2024-10-10 22:28:34,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:28:34,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:34,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:34,101 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:34,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 22:28:34,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 22:28:34,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:28:34,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-10 22:28:34,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-10-10 22:28:34,453 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:28:34,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299551587] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:28:34,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:28:34,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 22 [2024-10-10 22:28:34,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609092198] [2024-10-10 22:28:34,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:28:34,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-10 22:28:34,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:34,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-10 22:28:34,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2024-10-10 22:28:34,459 INFO L87 Difference]: Start difference. First operand 283 states and 416 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:34,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:34,709 INFO L93 Difference]: Finished difference Result 885 states and 1348 transitions. [2024-10-10 22:28:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 22:28:34,710 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-10-10 22:28:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:34,714 INFO L225 Difference]: With dead ends: 885 [2024-10-10 22:28:34,714 INFO L226 Difference]: Without dead ends: 612 [2024-10-10 22:28:34,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2024-10-10 22:28:34,719 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 108 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:34,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1158 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:28:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-10-10 22:28:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 605. [2024-10-10 22:28:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.4370860927152318) internal successors, (868), 604 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 868 transitions. [2024-10-10 22:28:34,750 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 868 transitions. Word has length 149 [2024-10-10 22:28:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:34,751 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 868 transitions. [2024-10-10 22:28:34,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 868 transitions. [2024-10-10 22:28:34,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-10-10 22:28:34,760 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:34,761 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:34,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 22:28:34,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:34,965 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:34,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1410286928, now seen corresponding path program 1 times [2024-10-10 22:28:34,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:34,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046874667] [2024-10-10 22:28:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:34,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 91 proven. 9 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-10-10 22:28:35,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:35,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046874667] [2024-10-10 22:28:35,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046874667] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:35,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348424857] [2024-10-10 22:28:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:35,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:35,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:35,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:35,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 22:28:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:35,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-10 22:28:35,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 46 proven. 102 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-10-10 22:28:35,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 139 proven. 9 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-10-10 22:28:35,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348424857] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:28:35,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:28:35,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-10-10 22:28:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99770243] [2024-10-10 22:28:35,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:28:35,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-10 22:28:35,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-10 22:28:35,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:28:35,888 INFO L87 Difference]: Start difference. First operand 605 states and 868 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:36,009 INFO L93 Difference]: Finished difference Result 1456 states and 2068 transitions. [2024-10-10 22:28:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:28:36,009 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-10-10 22:28:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:36,014 INFO L225 Difference]: With dead ends: 1456 [2024-10-10 22:28:36,014 INFO L226 Difference]: Without dead ends: 921 [2024-10-10 22:28:36,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 291 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:28:36,016 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 113 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:36,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 662 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:28:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-10-10 22:28:36,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 919. [2024-10-10 22:28:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 918 states have (on average 1.3877995642701526) internal successors, (1274), 918 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1274 transitions. [2024-10-10 22:28:36,043 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1274 transitions. Word has length 150 [2024-10-10 22:28:36,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:36,044 INFO L471 AbstractCegarLoop]: Abstraction has 919 states and 1274 transitions. [2024-10-10 22:28:36,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:36,045 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1274 transitions. [2024-10-10 22:28:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-10-10 22:28:36,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:36,047 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:36,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 22:28:36,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:36,252 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:36,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash -365398478, now seen corresponding path program 1 times [2024-10-10 22:28:36,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:36,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197754261] [2024-10-10 22:28:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:36,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:36,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:36,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197754261] [2024-10-10 22:28:36,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197754261] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:36,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855197520] [2024-10-10 22:28:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:36,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:36,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:36,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:36,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 22:28:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:36,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-10 22:28:36,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-10-10 22:28:36,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-10-10 22:28:36,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855197520] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:36,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:28:36,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12, 5] total 17 [2024-10-10 22:28:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145414744] [2024-10-10 22:28:36,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:28:36,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:28:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:36,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:28:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:28:36,980 INFO L87 Difference]: Start difference. First operand 919 states and 1274 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:37,815 INFO L93 Difference]: Finished difference Result 984 states and 1371 transitions. [2024-10-10 22:28:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:28:37,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-10-10 22:28:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:37,820 INFO L225 Difference]: With dead ends: 984 [2024-10-10 22:28:37,820 INFO L226 Difference]: Without dead ends: 975 [2024-10-10 22:28:37,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:28:37,822 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 32 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:37,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 360 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:28:37,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-10-10 22:28:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 975. [2024-10-10 22:28:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.3963039014373717) internal successors, (1360), 974 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:37,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1360 transitions. [2024-10-10 22:28:37,852 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1360 transitions. Word has length 150 [2024-10-10 22:28:37,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:37,852 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1360 transitions. [2024-10-10 22:28:37,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1360 transitions. [2024-10-10 22:28:37,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-10-10 22:28:37,855 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:37,855 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:37,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 22:28:38,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-10 22:28:38,056 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:38,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:38,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1261696569, now seen corresponding path program 1 times [2024-10-10 22:28:38,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:38,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501823991] [2024-10-10 22:28:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:38,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:38,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:38,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501823991] [2024-10-10 22:28:38,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501823991] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:38,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415970395] [2024-10-10 22:28:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:38,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:38,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:38,555 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:38,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 22:28:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:38,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 22:28:38,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-10-10 22:28:38,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-10-10 22:28:38,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415970395] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:38,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:28:38,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 6] total 19 [2024-10-10 22:28:38,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924076485] [2024-10-10 22:28:38,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:28:38,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:28:38,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:38,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:28:38,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:28:38,806 INFO L87 Difference]: Start difference. First operand 975 states and 1360 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:38,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:38,913 INFO L93 Difference]: Finished difference Result 1016 states and 1418 transitions. [2024-10-10 22:28:38,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:28:38,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-10-10 22:28:38,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:38,918 INFO L225 Difference]: With dead ends: 1016 [2024-10-10 22:28:38,918 INFO L226 Difference]: Without dead ends: 990 [2024-10-10 22:28:38,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:28:38,920 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:38,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 473 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:28:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-10-10 22:28:38,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 990. [2024-10-10 22:28:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 1.3923154701718907) internal successors, (1377), 989 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1377 transitions. [2024-10-10 22:28:38,941 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1377 transitions. Word has length 150 [2024-10-10 22:28:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:38,942 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1377 transitions. [2024-10-10 22:28:38,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1377 transitions. [2024-10-10 22:28:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-10-10 22:28:38,944 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:38,944 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:38,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-10 22:28:39,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:39,149 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:39,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:39,149 INFO L85 PathProgramCache]: Analyzing trace with hash 783554901, now seen corresponding path program 1 times [2024-10-10 22:28:39,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:39,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298199941] [2024-10-10 22:28:39,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:39,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2024-10-10 22:28:39,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:39,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298199941] [2024-10-10 22:28:39,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298199941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:28:39,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:28:39,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 22:28:39,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666513156] [2024-10-10 22:28:39,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:28:39,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:28:39,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:28:39,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:28:39,360 INFO L87 Difference]: Start difference. First operand 990 states and 1377 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:39,396 INFO L93 Difference]: Finished difference Result 2260 states and 3167 transitions. [2024-10-10 22:28:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:28:39,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-10-10 22:28:39,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:39,400 INFO L225 Difference]: With dead ends: 2260 [2024-10-10 22:28:39,401 INFO L226 Difference]: Without dead ends: 1295 [2024-10-10 22:28:39,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:28:39,402 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 7 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:39,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 380 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:28:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2024-10-10 22:28:39,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1295. [2024-10-10 22:28:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1294 states have (on average 1.3415765069551777) internal successors, (1736), 1294 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1736 transitions. [2024-10-10 22:28:39,444 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1736 transitions. Word has length 150 [2024-10-10 22:28:39,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:39,445 INFO L471 AbstractCegarLoop]: Abstraction has 1295 states and 1736 transitions. [2024-10-10 22:28:39,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1736 transitions. [2024-10-10 22:28:39,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-10 22:28:39,448 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:39,448 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:39,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 22:28:39,448 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:39,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:39,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1733582516, now seen corresponding path program 2 times [2024-10-10 22:28:39,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:39,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230031252] [2024-10-10 22:28:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:39,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:39,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:39,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230031252] [2024-10-10 22:28:39,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230031252] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:39,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647193682] [2024-10-10 22:28:39,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:28:39,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:39,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:39,900 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:39,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 22:28:40,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:28:40,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:28:40,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-10 22:28:40,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:40,549 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-10-10 22:28:40,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 8 proven. 101 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-10-10 22:28:41,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647193682] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:28:41,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:28:41,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 14] total 36 [2024-10-10 22:28:41,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214768183] [2024-10-10 22:28:41,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:28:41,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-10 22:28:41,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-10 22:28:41,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1192, Unknown=0, NotChecked=0, Total=1332 [2024-10-10 22:28:41,200 INFO L87 Difference]: Start difference. First operand 1295 states and 1736 transitions. Second operand has 37 states, 37 states have (on average 6.594594594594595) internal successors, (244), 36 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:50,678 INFO L93 Difference]: Finished difference Result 4123 states and 5776 transitions. [2024-10-10 22:28:50,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 342 states. [2024-10-10 22:28:50,679 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.594594594594595) internal successors, (244), 36 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2024-10-10 22:28:50,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:50,700 INFO L225 Difference]: With dead ends: 4123 [2024-10-10 22:28:50,700 INFO L226 Difference]: Without dead ends: 3298 [2024-10-10 22:28:50,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55039 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=7332, Invalid=120474, Unknown=0, NotChecked=0, Total=127806 [2024-10-10 22:28:50,726 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 2112 mSDsluCounter, 6493 mSDsCounter, 0 mSdLazyCounter, 5057 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 6754 SdHoareTripleChecker+Invalid, 5319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 5057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:50,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 6754 Invalid, 5319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 5057 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-10 22:28:50,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2024-10-10 22:28:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 1572. [2024-10-10 22:28:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1571 states have (on average 1.3647358370464673) internal successors, (2144), 1571 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2144 transitions. [2024-10-10 22:28:50,768 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2144 transitions. Word has length 151 [2024-10-10 22:28:50,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:50,768 INFO L471 AbstractCegarLoop]: Abstraction has 1572 states and 2144 transitions. [2024-10-10 22:28:50,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.594594594594595) internal successors, (244), 36 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2144 transitions. [2024-10-10 22:28:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-10 22:28:50,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:50,772 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:50,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 22:28:50,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-10 22:28:50,973 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:50,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:50,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2135670601, now seen corresponding path program 1 times [2024-10-10 22:28:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54147025] [2024-10-10 22:28:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:50,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:51,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54147025] [2024-10-10 22:28:51,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54147025] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907947802] [2024-10-10 22:28:51,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:51,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:51,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:51,495 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:51,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 22:28:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:51,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:28:51,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-10 22:28:51,656 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:28:51,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907947802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:28:51,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:28:51,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2024-10-10 22:28:51,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113465866] [2024-10-10 22:28:51,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:28:51,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:28:51,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:51,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:28:51,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:28:51,659 INFO L87 Difference]: Start difference. First operand 1572 states and 2144 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:51,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:51,823 INFO L93 Difference]: Finished difference Result 1593 states and 2171 transitions. [2024-10-10 22:28:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:28:51,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-10-10 22:28:51,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:51,828 INFO L225 Difference]: With dead ends: 1593 [2024-10-10 22:28:51,828 INFO L226 Difference]: Without dead ends: 1566 [2024-10-10 22:28:51,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:28:51,830 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:51,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:28:51,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-10-10 22:28:51,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1566. [2024-10-10 22:28:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1565 states have (on average 1.3635782747603833) internal successors, (2134), 1565 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2134 transitions. [2024-10-10 22:28:51,860 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2134 transitions. Word has length 163 [2024-10-10 22:28:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:51,861 INFO L471 AbstractCegarLoop]: Abstraction has 1566 states and 2134 transitions. [2024-10-10 22:28:51,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2134 transitions. [2024-10-10 22:28:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-10 22:28:51,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:51,864 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:51,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 22:28:52,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:52,066 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:52,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:52,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2033446774, now seen corresponding path program 1 times [2024-10-10 22:28:52,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:52,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231897683] [2024-10-10 22:28:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:52,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:52,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:52,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231897683] [2024-10-10 22:28:52,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231897683] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:52,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584761222] [2024-10-10 22:28:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:52,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:52,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:52,533 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:52,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 22:28:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:52,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 22:28:52,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-10 22:28:52,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-10 22:28:52,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584761222] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:52,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:28:52,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 6] total 18 [2024-10-10 22:28:52,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067614265] [2024-10-10 22:28:52,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:28:52,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:28:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:28:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:28:52,725 INFO L87 Difference]: Start difference. First operand 1566 states and 2134 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:52,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:52,754 INFO L93 Difference]: Finished difference Result 1650 states and 2259 transitions. [2024-10-10 22:28:52,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:28:52,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-10-10 22:28:52,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:52,759 INFO L225 Difference]: With dead ends: 1650 [2024-10-10 22:28:52,759 INFO L226 Difference]: Without dead ends: 1574 [2024-10-10 22:28:52,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:28:52,760 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:52,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 251 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:28:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2024-10-10 22:28:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1574. [2024-10-10 22:28:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1573 states have (on average 1.3642720915448188) internal successors, (2146), 1573 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2146 transitions. [2024-10-10 22:28:52,793 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2146 transitions. Word has length 163 [2024-10-10 22:28:52,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:52,793 INFO L471 AbstractCegarLoop]: Abstraction has 1574 states and 2146 transitions. [2024-10-10 22:28:52,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:52,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2146 transitions. [2024-10-10 22:28:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-10 22:28:52,797 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:52,797 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:52,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-10 22:28:52,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-10 22:28:52,998 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:52,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:52,998 INFO L85 PathProgramCache]: Analyzing trace with hash 735670134, now seen corresponding path program 1 times [2024-10-10 22:28:52,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:52,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505971421] [2024-10-10 22:28:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:52,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 110 proven. 10 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-10-10 22:28:53,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:53,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505971421] [2024-10-10 22:28:53,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505971421] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:53,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121571735] [2024-10-10 22:28:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:53,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:53,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:53,256 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:53,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 22:28:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:53,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-10 22:28:53,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 90 proven. 111 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-10-10 22:28:53,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 191 proven. 10 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-10-10 22:28:53,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121571735] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:28:53,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:28:53,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-10-10 22:28:53,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228953143] [2024-10-10 22:28:53,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:28:53,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-10 22:28:53,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:53,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-10 22:28:53,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:28:53,880 INFO L87 Difference]: Start difference. First operand 1574 states and 2146 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:54,027 INFO L93 Difference]: Finished difference Result 3717 states and 4998 transitions. [2024-10-10 22:28:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:28:54,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-10-10 22:28:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:54,035 INFO L225 Difference]: With dead ends: 3717 [2024-10-10 22:28:54,035 INFO L226 Difference]: Without dead ends: 2245 [2024-10-10 22:28:54,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:28:54,039 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 75 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:54,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 848 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:28:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2024-10-10 22:28:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2241. [2024-10-10 22:28:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 2240 states have (on average 1.3120535714285715) internal successors, (2939), 2240 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:54,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 2939 transitions. [2024-10-10 22:28:54,096 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 2939 transitions. Word has length 163 [2024-10-10 22:28:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:54,096 INFO L471 AbstractCegarLoop]: Abstraction has 2241 states and 2939 transitions. [2024-10-10 22:28:54,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 2939 transitions. [2024-10-10 22:28:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-10 22:28:54,101 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:54,101 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:54,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-10 22:28:54,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-10 22:28:54,302 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:54,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:54,303 INFO L85 PathProgramCache]: Analyzing trace with hash -332479669, now seen corresponding path program 1 times [2024-10-10 22:28:54,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:54,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087671938] [2024-10-10 22:28:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:54,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:54,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:54,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087671938] [2024-10-10 22:28:54,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087671938] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:54,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060444836] [2024-10-10 22:28:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:54,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:54,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:54,812 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:54,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-10 22:28:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:54,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 22:28:54,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-10 22:28:54,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-10 22:28:55,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060444836] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:55,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:28:55,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 20 [2024-10-10 22:28:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119195177] [2024-10-10 22:28:55,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:28:55,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:28:55,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:28:55,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:28:55,028 INFO L87 Difference]: Start difference. First operand 2241 states and 2939 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:55,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:55,164 INFO L93 Difference]: Finished difference Result 2319 states and 3048 transitions. [2024-10-10 22:28:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:28:55,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-10-10 22:28:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:55,171 INFO L225 Difference]: With dead ends: 2319 [2024-10-10 22:28:55,171 INFO L226 Difference]: Without dead ends: 2256 [2024-10-10 22:28:55,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:28:55,173 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:55,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 473 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:28:55,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2024-10-10 22:28:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2024-10-10 22:28:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.3108647450110864) internal successors, (2956), 2255 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2956 transitions. [2024-10-10 22:28:55,228 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2956 transitions. Word has length 164 [2024-10-10 22:28:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:55,228 INFO L471 AbstractCegarLoop]: Abstraction has 2256 states and 2956 transitions. [2024-10-10 22:28:55,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2956 transitions. [2024-10-10 22:28:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-10 22:28:55,233 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:55,233 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:55,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-10 22:28:55,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-10 22:28:55,434 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:55,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1517680494, now seen corresponding path program 1 times [2024-10-10 22:28:55,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:55,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363099293] [2024-10-10 22:28:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:55,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:55,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:55,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363099293] [2024-10-10 22:28:55,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363099293] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:55,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744140453] [2024-10-10 22:28:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:55,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:55,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:55,862 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:55,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-10 22:28:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:55,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 22:28:55,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-10 22:28:56,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-10 22:28:56,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744140453] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:56,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:28:56,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 20 [2024-10-10 22:28:56,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913826084] [2024-10-10 22:28:56,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:28:56,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:28:56,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:56,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:28:56,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:28:56,093 INFO L87 Difference]: Start difference. First operand 2256 states and 2956 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:57,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:57,179 INFO L93 Difference]: Finished difference Result 2447 states and 3231 transitions. [2024-10-10 22:28:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:28:57,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-10-10 22:28:57,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:57,188 INFO L225 Difference]: With dead ends: 2447 [2024-10-10 22:28:57,188 INFO L226 Difference]: Without dead ends: 2272 [2024-10-10 22:28:57,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:28:57,191 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:57,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 474 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-10 22:28:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2024-10-10 22:28:57,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2272. [2024-10-10 22:28:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 2271 states have (on average 1.310435931307794) internal successors, (2976), 2271 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 2976 transitions. [2024-10-10 22:28:57,239 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 2976 transitions. Word has length 164 [2024-10-10 22:28:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:57,239 INFO L471 AbstractCegarLoop]: Abstraction has 2272 states and 2976 transitions. [2024-10-10 22:28:57,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:57,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 2976 transitions. [2024-10-10 22:28:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-10 22:28:57,244 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:57,244 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:57,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-10 22:28:57,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:57,445 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:57,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:57,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1450998176, now seen corresponding path program 2 times [2024-10-10 22:28:57,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:57,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726071665] [2024-10-10 22:28:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:57,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-10-10 22:28:57,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:57,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726071665] [2024-10-10 22:28:57,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726071665] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:28:57,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:28:57,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-10 22:28:57,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558733918] [2024-10-10 22:28:57,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:28:57,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:28:57,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:57,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:28:57,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:28:57,776 INFO L87 Difference]: Start difference. First operand 2272 states and 2976 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:57,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:28:57,855 INFO L93 Difference]: Finished difference Result 3811 states and 5099 transitions. [2024-10-10 22:28:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:28:57,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-10-10 22:28:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:28:57,862 INFO L225 Difference]: With dead ends: 3811 [2024-10-10 22:28:57,863 INFO L226 Difference]: Without dead ends: 2316 [2024-10-10 22:28:57,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:28:57,865 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 47 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:28:57,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 313 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:28:57,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2024-10-10 22:28:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2312. [2024-10-10 22:28:57,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2311 states have (on average 1.305062743401125) internal successors, (3016), 2311 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3016 transitions. [2024-10-10 22:28:57,918 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3016 transitions. Word has length 164 [2024-10-10 22:28:57,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:28:57,919 INFO L471 AbstractCegarLoop]: Abstraction has 2312 states and 3016 transitions. [2024-10-10 22:28:57,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:28:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3016 transitions. [2024-10-10 22:28:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-10 22:28:57,924 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:28:57,924 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:28:57,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-10 22:28:57,924 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:28:57,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:28:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1022257921, now seen corresponding path program 1 times [2024-10-10 22:28:57,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:28:57,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536817017] [2024-10-10 22:28:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:57,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:28:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:28:58,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:28:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536817017] [2024-10-10 22:28:58,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536817017] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859028157] [2024-10-10 22:28:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:28:58,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:28:58,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:28:58,363 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:28:58,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-10 22:28:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:28:58,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-10 22:28:58,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:28:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-10-10 22:28:58,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:28:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-10-10 22:28:59,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859028157] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:28:59,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:28:59,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 21 [2024-10-10 22:28:59,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581337873] [2024-10-10 22:28:59,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:28:59,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:28:59,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:28:59,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:28:59,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-10-10 22:28:59,102 INFO L87 Difference]: Start difference. First operand 2312 states and 3016 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:01,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-10 22:29:05,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-10 22:29:05,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:05,152 INFO L93 Difference]: Finished difference Result 3159 states and 4069 transitions. [2024-10-10 22:29:05,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:29:05,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2024-10-10 22:29:05,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:05,167 INFO L225 Difference]: With dead ends: 3159 [2024-10-10 22:29:05,167 INFO L226 Difference]: Without dead ends: 2868 [2024-10-10 22:29:05,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-10-10 22:29:05,169 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 69 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:05,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 448 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2024-10-10 22:29:05,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2024-10-10 22:29:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2859. [2024-10-10 22:29:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 1.2834149755073478) internal successors, (3668), 2858 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3668 transitions. [2024-10-10 22:29:05,237 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3668 transitions. Word has length 165 [2024-10-10 22:29:05,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:05,237 INFO L471 AbstractCegarLoop]: Abstraction has 2859 states and 3668 transitions. [2024-10-10 22:29:05,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3668 transitions. [2024-10-10 22:29:05,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-10 22:29:05,242 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:05,243 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:05,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-10 22:29:05,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-10 22:29:05,443 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:05,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:05,444 INFO L85 PathProgramCache]: Analyzing trace with hash 715960593, now seen corresponding path program 1 times [2024-10-10 22:29:05,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:05,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967723351] [2024-10-10 22:29:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:05,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:05,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:05,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967723351] [2024-10-10 22:29:05,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967723351] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:05,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102537118] [2024-10-10 22:29:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:05,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:05,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:05,956 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:05,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-10 22:29:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:06,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:29:06,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-10 22:29:06,140 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:29:06,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102537118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:29:06,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:29:06,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2024-10-10 22:29:06,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509669174] [2024-10-10 22:29:06,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:06,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:29:06,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:06,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:29:06,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:29:06,141 INFO L87 Difference]: Start difference. First operand 2859 states and 3668 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:06,323 INFO L93 Difference]: Finished difference Result 2917 states and 3746 transitions. [2024-10-10 22:29:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:29:06,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2024-10-10 22:29:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:06,338 INFO L225 Difference]: With dead ends: 2917 [2024-10-10 22:29:06,339 INFO L226 Difference]: Without dead ends: 2853 [2024-10-10 22:29:06,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:29:06,345 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:06,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:29:06,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2024-10-10 22:29:06,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 2853. [2024-10-10 22:29:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2852 states have (on average 1.2826086956521738) internal successors, (3658), 2852 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 3658 transitions. [2024-10-10 22:29:06,407 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 3658 transitions. Word has length 165 [2024-10-10 22:29:06,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:06,407 INFO L471 AbstractCegarLoop]: Abstraction has 2853 states and 3658 transitions. [2024-10-10 22:29:06,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:06,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 3658 transitions. [2024-10-10 22:29:06,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-10 22:29:06,412 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:06,413 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:06,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-10 22:29:06,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-10 22:29:06,617 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:06,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:06,618 INFO L85 PathProgramCache]: Analyzing trace with hash -539606701, now seen corresponding path program 1 times [2024-10-10 22:29:06,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:06,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743376964] [2024-10-10 22:29:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:06,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:07,003 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:07,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:07,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743376964] [2024-10-10 22:29:07,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743376964] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:07,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652784078] [2024-10-10 22:29:07,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:07,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:07,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:07,006 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:07,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-10 22:29:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:07,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 22:29:07,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-10 22:29:07,140 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:29:07,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652784078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:29:07,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:29:07,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2024-10-10 22:29:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010375122] [2024-10-10 22:29:07,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:07,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:29:07,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:07,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:29:07,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-10 22:29:07,142 INFO L87 Difference]: Start difference. First operand 2853 states and 3658 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:07,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:07,603 INFO L93 Difference]: Finished difference Result 3021 states and 3887 transitions. [2024-10-10 22:29:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:29:07,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2024-10-10 22:29:07,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:07,609 INFO L225 Difference]: With dead ends: 3021 [2024-10-10 22:29:07,610 INFO L226 Difference]: Without dead ends: 2848 [2024-10-10 22:29:07,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-10 22:29:07,612 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:07,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 360 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:29:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2024-10-10 22:29:07,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2848. [2024-10-10 22:29:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2847 states have (on average 1.2813487881981032) internal successors, (3648), 2847 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:07,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 3648 transitions. [2024-10-10 22:29:07,682 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 3648 transitions. Word has length 165 [2024-10-10 22:29:07,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:07,683 INFO L471 AbstractCegarLoop]: Abstraction has 2848 states and 3648 transitions. [2024-10-10 22:29:07,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:07,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 3648 transitions. [2024-10-10 22:29:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-10 22:29:07,691 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:07,691 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:07,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-10 22:29:07,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:07,892 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:07,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:07,892 INFO L85 PathProgramCache]: Analyzing trace with hash -778912676, now seen corresponding path program 1 times [2024-10-10 22:29:07,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:07,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88426676] [2024-10-10 22:29:07,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:07,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:08,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:08,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88426676] [2024-10-10 22:29:08,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88426676] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:08,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732110148] [2024-10-10 22:29:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:08,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:08,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:08,344 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:08,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-10 22:29:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:08,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-10 22:29:08,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2024-10-10 22:29:08,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:29:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2024-10-10 22:29:08,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732110148] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:08,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:29:08,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 21 [2024-10-10 22:29:08,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844350860] [2024-10-10 22:29:08,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:08,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:29:08,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:08,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:29:08,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-10-10 22:29:08,793 INFO L87 Difference]: Start difference. First operand 2848 states and 3648 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:09,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-10 22:29:14,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-10 22:29:18,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-10 22:29:22,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-10 22:29:24,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-10 22:29:26,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-10 22:29:30,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.86s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-10 22:29:30,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:30,759 INFO L93 Difference]: Finished difference Result 3154 states and 4089 transitions. [2024-10-10 22:29:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:29:30,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2024-10-10 22:29:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:30,764 INFO L225 Difference]: With dead ends: 3154 [2024-10-10 22:29:30,765 INFO L226 Difference]: Without dead ends: 2856 [2024-10-10 22:29:30,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-10-10 22:29:30,766 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 25 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:30,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 482 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 3 Unknown, 0 Unchecked, 21.9s Time] [2024-10-10 22:29:30,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2024-10-10 22:29:30,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2856. [2024-10-10 22:29:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2855 states have (on average 1.2802101576182137) internal successors, (3655), 2855 states have internal predecessors, (3655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 3655 transitions. [2024-10-10 22:29:30,827 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 3655 transitions. Word has length 165 [2024-10-10 22:29:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:30,827 INFO L471 AbstractCegarLoop]: Abstraction has 2856 states and 3655 transitions. [2024-10-10 22:29:30,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 3655 transitions. [2024-10-10 22:29:30,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-10 22:29:30,837 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:30,838 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:30,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-10 22:29:31,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:31,038 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:31,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:31,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1937505467, now seen corresponding path program 1 times [2024-10-10 22:29:31,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:31,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466398654] [2024-10-10 22:29:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:31,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:31,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:31,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466398654] [2024-10-10 22:29:31,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466398654] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:31,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241100455] [2024-10-10 22:29:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:31,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:31,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:31,373 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:31,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-10 22:29:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:31,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:29:31,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 62 proven. 10 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-10-10 22:29:31,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:29:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-10-10 22:29:32,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241100455] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:32,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:29:32,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 6] total 21 [2024-10-10 22:29:32,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868744213] [2024-10-10 22:29:32,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:32,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-10 22:29:32,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:32,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-10 22:29:32,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-10-10 22:29:32,039 INFO L87 Difference]: Start difference. First operand 2856 states and 3655 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:32,213 INFO L93 Difference]: Finished difference Result 2971 states and 3816 transitions. [2024-10-10 22:29:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 22:29:32,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-10-10 22:29:32,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:32,219 INFO L225 Difference]: With dead ends: 2971 [2024-10-10 22:29:32,219 INFO L226 Difference]: Without dead ends: 2860 [2024-10-10 22:29:32,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-10-10 22:29:32,221 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 53 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:32,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 756 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:29:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2024-10-10 22:29:32,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2860. [2024-10-10 22:29:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2859 states have (on average 1.279818118223155) internal successors, (3659), 2859 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 3659 transitions. [2024-10-10 22:29:32,277 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 3659 transitions. Word has length 166 [2024-10-10 22:29:32,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:32,278 INFO L471 AbstractCegarLoop]: Abstraction has 2860 states and 3659 transitions. [2024-10-10 22:29:32,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:32,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 3659 transitions. [2024-10-10 22:29:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-10 22:29:32,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:32,283 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:32,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-10 22:29:32,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-10 22:29:32,484 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:32,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:32,485 INFO L85 PathProgramCache]: Analyzing trace with hash -892805294, now seen corresponding path program 1 times [2024-10-10 22:29:32,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:32,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619584977] [2024-10-10 22:29:32,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:32,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:32,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:32,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619584977] [2024-10-10 22:29:32,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619584977] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:32,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615496321] [2024-10-10 22:29:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:32,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:32,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:32,910 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:32,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-10 22:29:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:33,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 22:29:33,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-10 22:29:33,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:29:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-10 22:29:33,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615496321] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:33,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:29:33,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 6] total 18 [2024-10-10 22:29:33,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914138374] [2024-10-10 22:29:33,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:33,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:29:33,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:33,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:29:33,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:29:33,099 INFO L87 Difference]: Start difference. First operand 2860 states and 3659 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:33,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:33,144 INFO L93 Difference]: Finished difference Result 2945 states and 3778 transitions. [2024-10-10 22:29:33,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:29:33,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-10-10 22:29:33,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:33,152 INFO L225 Difference]: With dead ends: 2945 [2024-10-10 22:29:33,152 INFO L226 Difference]: Without dead ends: 2868 [2024-10-10 22:29:33,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:29:33,154 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:33,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 251 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:29:33,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2024-10-10 22:29:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2868. [2024-10-10 22:29:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2868 states, 2867 states have (on average 1.2800837111963725) internal successors, (3670), 2867 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 3670 transitions. [2024-10-10 22:29:33,204 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 3670 transitions. Word has length 166 [2024-10-10 22:29:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:33,205 INFO L471 AbstractCegarLoop]: Abstraction has 2868 states and 3670 transitions. [2024-10-10 22:29:33,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:33,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 3670 transitions. [2024-10-10 22:29:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-10 22:29:33,209 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:33,210 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:33,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-10 22:29:33,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:33,411 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:33,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash -393351231, now seen corresponding path program 1 times [2024-10-10 22:29:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:33,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041745587] [2024-10-10 22:29:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:33,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:33,874 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:33,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:33,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041745587] [2024-10-10 22:29:33,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041745587] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:33,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158830460] [2024-10-10 22:29:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:33,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:33,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:33,877 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:33,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-10 22:29:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:34,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 22:29:34,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-10 22:29:34,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:29:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-10 22:29:34,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158830460] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:34,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:29:34,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 20 [2024-10-10 22:29:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954525578] [2024-10-10 22:29:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:34,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:29:34,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:29:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:29:34,148 INFO L87 Difference]: Start difference. First operand 2868 states and 3670 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:35,131 INFO L93 Difference]: Finished difference Result 3133 states and 4044 transitions. [2024-10-10 22:29:35,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:29:35,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-10-10 22:29:35,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:35,136 INFO L225 Difference]: With dead ends: 3133 [2024-10-10 22:29:35,137 INFO L226 Difference]: Without dead ends: 2888 [2024-10-10 22:29:35,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:29:35,138 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:35,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 474 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:29:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2024-10-10 22:29:35,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2888. [2024-10-10 22:29:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2887 states have (on average 1.279875303082785) internal successors, (3695), 2887 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 3695 transitions. [2024-10-10 22:29:35,194 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 3695 transitions. Word has length 166 [2024-10-10 22:29:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:35,194 INFO L471 AbstractCegarLoop]: Abstraction has 2888 states and 3695 transitions. [2024-10-10 22:29:35,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 3695 transitions. [2024-10-10 22:29:35,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-10 22:29:35,199 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:35,199 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:35,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-10 22:29:35,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-10 22:29:35,404 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:35,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash 883810176, now seen corresponding path program 1 times [2024-10-10 22:29:35,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:35,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633152699] [2024-10-10 22:29:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:35,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:35,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:35,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633152699] [2024-10-10 22:29:35,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633152699] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:35,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131490168] [2024-10-10 22:29:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:35,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:35,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:35,761 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:35,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-10 22:29:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:35,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 22:29:35,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 89 proven. 9 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-10-10 22:29:35,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:29:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2024-10-10 22:29:36,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131490168] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:36,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:29:36,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 6] total 21 [2024-10-10 22:29:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337791698] [2024-10-10 22:29:36,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:36,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-10 22:29:36,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-10 22:29:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-10-10 22:29:36,111 INFO L87 Difference]: Start difference. First operand 2888 states and 3695 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:36,336 INFO L93 Difference]: Finished difference Result 3207 states and 4147 transitions. [2024-10-10 22:29:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 22:29:36,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-10-10 22:29:36,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:36,341 INFO L225 Difference]: With dead ends: 3207 [2024-10-10 22:29:36,341 INFO L226 Difference]: Without dead ends: 2892 [2024-10-10 22:29:36,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-10-10 22:29:36,343 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 48 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:36,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 483 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:29:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2024-10-10 22:29:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2892. [2024-10-10 22:29:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2891 states have (on average 1.2791421653407125) internal successors, (3698), 2891 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 3698 transitions. [2024-10-10 22:29:36,398 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 3698 transitions. Word has length 166 [2024-10-10 22:29:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:36,398 INFO L471 AbstractCegarLoop]: Abstraction has 2892 states and 3698 transitions. [2024-10-10 22:29:36,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 3698 transitions. [2024-10-10 22:29:36,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-10 22:29:36,403 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:36,403 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:36,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-10 22:29:36,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-10 22:29:36,607 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:36,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash 481740379, now seen corresponding path program 1 times [2024-10-10 22:29:36,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:36,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581374629] [2024-10-10 22:29:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:36,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:36,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:36,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581374629] [2024-10-10 22:29:36,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581374629] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:36,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832185099] [2024-10-10 22:29:36,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:36,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:36,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:36,965 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:36,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-10 22:29:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:37,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 22:29:37,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:37,181 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 653 trivial. 0 not checked. [2024-10-10 22:29:37,181 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:29:37,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832185099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:29:37,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:29:37,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2024-10-10 22:29:37,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508291] [2024-10-10 22:29:37,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:37,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:29:37,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:37,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:29:37,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:29:37,183 INFO L87 Difference]: Start difference. First operand 2892 states and 3698 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:37,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:37,337 INFO L93 Difference]: Finished difference Result 3023 states and 3878 transitions. [2024-10-10 22:29:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:29:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-10 22:29:37,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:37,342 INFO L225 Difference]: With dead ends: 3023 [2024-10-10 22:29:37,342 INFO L226 Difference]: Without dead ends: 2904 [2024-10-10 22:29:37,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:29:37,344 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 34 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:37,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 419 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:29:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2024-10-10 22:29:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2900. [2024-10-10 22:29:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2899 states have (on average 1.2783718523628838) internal successors, (3706), 2899 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 3706 transitions. [2024-10-10 22:29:37,395 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 3706 transitions. Word has length 167 [2024-10-10 22:29:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:37,396 INFO L471 AbstractCegarLoop]: Abstraction has 2900 states and 3706 transitions. [2024-10-10 22:29:37,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 3706 transitions. [2024-10-10 22:29:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-10 22:29:37,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:37,400 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:37,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-10 22:29:37,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:37,600 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:37,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:37,601 INFO L85 PathProgramCache]: Analyzing trace with hash -756542770, now seen corresponding path program 1 times [2024-10-10 22:29:37,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:37,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191033420] [2024-10-10 22:29:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:37,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:37,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191033420] [2024-10-10 22:29:37,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191033420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:37,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319817389] [2024-10-10 22:29:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:37,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:37,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:37,952 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:37,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-10 22:29:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:38,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 22:29:38,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-10 22:29:38,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:29:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-10 22:29:38,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319817389] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:38,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:29:38,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 20 [2024-10-10 22:29:38,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041797279] [2024-10-10 22:29:38,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:38,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:29:38,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:29:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:29:38,146 INFO L87 Difference]: Start difference. First operand 2900 states and 3706 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:38,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:38,388 INFO L93 Difference]: Finished difference Result 3019 states and 3870 transitions. [2024-10-10 22:29:38,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:29:38,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-10 22:29:38,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:38,393 INFO L225 Difference]: With dead ends: 3019 [2024-10-10 22:29:38,393 INFO L226 Difference]: Without dead ends: 2915 [2024-10-10 22:29:38,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:29:38,394 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:38,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 473 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:29:38,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2024-10-10 22:29:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2915. [2024-10-10 22:29:38,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2914 states have (on average 1.2776252573781743) internal successors, (3723), 2914 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 3723 transitions. [2024-10-10 22:29:38,448 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 3723 transitions. Word has length 167 [2024-10-10 22:29:38,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:38,448 INFO L471 AbstractCegarLoop]: Abstraction has 2915 states and 3723 transitions. [2024-10-10 22:29:38,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:38,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 3723 transitions. [2024-10-10 22:29:38,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-10 22:29:38,452 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:38,452 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:38,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-10 22:29:38,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:38,654 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:38,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:38,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1408721735, now seen corresponding path program 1 times [2024-10-10 22:29:38,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:38,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370239158] [2024-10-10 22:29:38,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:38,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:38,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:38,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370239158] [2024-10-10 22:29:38,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370239158] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:38,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100381587] [2024-10-10 22:29:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:38,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:38,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:38,958 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:38,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-10 22:29:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:39,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:29:39,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-10 22:29:39,095 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:29:39,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100381587] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:29:39,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:29:39,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2024-10-10 22:29:39,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473490692] [2024-10-10 22:29:39,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:39,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:29:39,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:29:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:29:39,096 INFO L87 Difference]: Start difference. First operand 2915 states and 3723 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:39,246 INFO L93 Difference]: Finished difference Result 3178 states and 4082 transitions. [2024-10-10 22:29:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:29:39,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-10 22:29:39,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:39,250 INFO L225 Difference]: With dead ends: 3178 [2024-10-10 22:29:39,250 INFO L226 Difference]: Without dead ends: 2910 [2024-10-10 22:29:39,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:29:39,252 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:39,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:29:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2024-10-10 22:29:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2910. [2024-10-10 22:29:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2909 states have (on average 1.2763836369886559) internal successors, (3713), 2909 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 3713 transitions. [2024-10-10 22:29:39,307 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 3713 transitions. Word has length 167 [2024-10-10 22:29:39,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:39,308 INFO L471 AbstractCegarLoop]: Abstraction has 2910 states and 3713 transitions. [2024-10-10 22:29:39,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 3713 transitions. [2024-10-10 22:29:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-10 22:29:39,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:39,312 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:39,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-10 22:29:39,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-10 22:29:39,513 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:39,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2017848822, now seen corresponding path program 1 times [2024-10-10 22:29:39,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:39,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361662979] [2024-10-10 22:29:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:39,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:39,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361662979] [2024-10-10 22:29:39,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361662979] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350430129] [2024-10-10 22:29:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:39,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:39,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:39,825 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:39,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-10 22:29:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:39,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-10 22:29:39,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 89 proven. 9 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-10-10 22:29:40,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:29:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-10-10 22:29:40,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350430129] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:40,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:29:40,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13, 6] total 20 [2024-10-10 22:29:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408193349] [2024-10-10 22:29:40,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:40,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:29:40,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:40,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:29:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:29:40,122 INFO L87 Difference]: Start difference. First operand 2910 states and 3713 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:41,118 INFO L93 Difference]: Finished difference Result 3233 states and 4157 transitions. [2024-10-10 22:29:41,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:29:41,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-10 22:29:41,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:41,121 INFO L225 Difference]: With dead ends: 3233 [2024-10-10 22:29:41,122 INFO L226 Difference]: Without dead ends: 2920 [2024-10-10 22:29:41,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:29:41,123 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 5 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:41,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 334 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:29:41,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2024-10-10 22:29:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2920. [2024-10-10 22:29:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2919 states have (on average 1.275436793422405) internal successors, (3723), 2919 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 3723 transitions. [2024-10-10 22:29:41,176 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 3723 transitions. Word has length 167 [2024-10-10 22:29:41,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:41,176 INFO L471 AbstractCegarLoop]: Abstraction has 2920 states and 3723 transitions. [2024-10-10 22:29:41,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:41,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 3723 transitions. [2024-10-10 22:29:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-10 22:29:41,180 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:41,181 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:41,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-10-10 22:29:41,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-10 22:29:41,381 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:41,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1469616258, now seen corresponding path program 1 times [2024-10-10 22:29:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:41,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127573991] [2024-10-10 22:29:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:41,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:41,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:41,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127573991] [2024-10-10 22:29:41,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127573991] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:41,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920609674] [2024-10-10 22:29:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:41,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:41,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:41,679 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:41,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-10 22:29:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:41,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 22:29:41,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 51 proven. 11 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2024-10-10 22:29:42,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:29:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 51 proven. 11 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2024-10-10 22:29:42,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920609674] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:29:42,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:29:42,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 20 [2024-10-10 22:29:42,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944434684] [2024-10-10 22:29:42,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:29:42,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-10 22:29:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:42,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-10 22:29:42,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:29:42,271 INFO L87 Difference]: Start difference. First operand 2920 states and 3723 transitions. Second operand has 20 states, 20 states have (on average 12.15) internal successors, (243), 20 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:44,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:44,454 INFO L93 Difference]: Finished difference Result 6132 states and 7914 transitions. [2024-10-10 22:29:44,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-10-10 22:29:44,454 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.15) internal successors, (243), 20 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2024-10-10 22:29:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:44,459 INFO L225 Difference]: With dead ends: 6132 [2024-10-10 22:29:44,459 INFO L226 Difference]: Without dead ends: 5626 [2024-10-10 22:29:44,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=532, Invalid=4298, Unknown=0, NotChecked=0, Total=4830 [2024-10-10 22:29:44,462 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 1308 mSDsluCounter, 6471 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 6947 SdHoareTripleChecker+Invalid, 3659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:44,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 6947 Invalid, 3659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3633 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-10 22:29:44,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2024-10-10 22:29:44,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 3106. [2024-10-10 22:29:44,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 3105 states have (on average 1.2711755233494364) internal successors, (3947), 3105 states have internal predecessors, (3947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 3947 transitions. [2024-10-10 22:29:44,533 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 3947 transitions. Word has length 168 [2024-10-10 22:29:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:44,533 INFO L471 AbstractCegarLoop]: Abstraction has 3106 states and 3947 transitions. [2024-10-10 22:29:44,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.15) internal successors, (243), 20 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:44,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 3947 transitions. [2024-10-10 22:29:44,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-10 22:29:44,538 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:44,538 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:44,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-10 22:29:44,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-10 22:29:44,739 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:44,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:44,740 INFO L85 PathProgramCache]: Analyzing trace with hash -297481807, now seen corresponding path program 1 times [2024-10-10 22:29:44,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:44,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503739594] [2024-10-10 22:29:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:44,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:45,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:45,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503739594] [2024-10-10 22:29:45,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503739594] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891775851] [2024-10-10 22:29:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:45,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:45,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:45,161 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:45,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-10 22:29:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:45,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 22:29:45,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-10-10 22:29:45,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:29:45,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891775851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:29:45,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:29:45,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 17 [2024-10-10 22:29:45,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651797360] [2024-10-10 22:29:45,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:45,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:29:45,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:29:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:29:45,308 INFO L87 Difference]: Start difference. First operand 3106 states and 3947 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:45,386 INFO L93 Difference]: Finished difference Result 3220 states and 4098 transitions. [2024-10-10 22:29:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:29:45,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-10-10 22:29:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:45,390 INFO L225 Difference]: With dead ends: 3220 [2024-10-10 22:29:45,390 INFO L226 Difference]: Without dead ends: 3122 [2024-10-10 22:29:45,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:29:45,391 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 2 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:45,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 362 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:29:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2024-10-10 22:29:45,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3118. [2024-10-10 22:29:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3118 states, 3117 states have (on average 1.2701315367340391) internal successors, (3959), 3117 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 3959 transitions. [2024-10-10 22:29:45,454 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 3959 transitions. Word has length 180 [2024-10-10 22:29:45,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:45,454 INFO L471 AbstractCegarLoop]: Abstraction has 3118 states and 3959 transitions. [2024-10-10 22:29:45,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:45,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 3959 transitions. [2024-10-10 22:29:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-10 22:29:45,459 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:45,459 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:45,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-10-10 22:29:45,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:45,660 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:45,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash -276650238, now seen corresponding path program 1 times [2024-10-10 22:29:45,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:45,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719322992] [2024-10-10 22:29:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:45,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:45,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:45,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719322992] [2024-10-10 22:29:45,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719322992] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:45,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724051294] [2024-10-10 22:29:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:45,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:45,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:45,984 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:45,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-10 22:29:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:46,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-10 22:29:46,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-10-10 22:29:46,134 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:29:46,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724051294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:29:46,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:29:46,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2024-10-10 22:29:46,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537846639] [2024-10-10 22:29:46,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:46,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:29:46,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:46,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:29:46,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:29:46,135 INFO L87 Difference]: Start difference. First operand 3118 states and 3959 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:46,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:46,236 INFO L93 Difference]: Finished difference Result 3158 states and 4012 transitions. [2024-10-10 22:29:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:29:46,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-10-10 22:29:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:46,239 INFO L225 Difference]: With dead ends: 3158 [2024-10-10 22:29:46,239 INFO L226 Difference]: Without dead ends: 3134 [2024-10-10 22:29:46,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:29:46,240 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:46,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 475 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:29:46,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2024-10-10 22:29:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 3130. [2024-10-10 22:29:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3129 states have (on average 1.2690955576861618) internal successors, (3971), 3129 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 3971 transitions. [2024-10-10 22:29:46,295 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 3971 transitions. Word has length 180 [2024-10-10 22:29:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:46,296 INFO L471 AbstractCegarLoop]: Abstraction has 3130 states and 3971 transitions. [2024-10-10 22:29:46,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 3971 transitions. [2024-10-10 22:29:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-10 22:29:46,300 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:46,300 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:46,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-10 22:29:46,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:46,500 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:46,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:46,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1324227425, now seen corresponding path program 1 times [2024-10-10 22:29:46,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:46,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108797294] [2024-10-10 22:29:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:46,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:46,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:46,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108797294] [2024-10-10 22:29:46,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108797294] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:46,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111012802] [2024-10-10 22:29:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:46,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:46,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:46,771 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:46,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-10 22:29:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:46,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 22:29:46,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2024-10-10 22:29:46,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:29:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-10-10 22:29:46,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111012802] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:46,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:29:46,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14, 6] total 19 [2024-10-10 22:29:46,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996594558] [2024-10-10 22:29:46,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:46,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:29:46,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:46,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:29:46,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:29:46,941 INFO L87 Difference]: Start difference. First operand 3130 states and 3971 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:46,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:46,977 INFO L93 Difference]: Finished difference Result 3424 states and 4368 transitions. [2024-10-10 22:29:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:29:46,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-10-10 22:29:46,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:46,980 INFO L225 Difference]: With dead ends: 3424 [2024-10-10 22:29:46,980 INFO L226 Difference]: Without dead ends: 3138 [2024-10-10 22:29:46,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:29:46,981 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:46,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 251 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:29:46,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2024-10-10 22:29:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 3138. [2024-10-10 22:29:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 3137 states have (on average 1.2696844118584636) internal successors, (3983), 3137 states have internal predecessors, (3983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 3983 transitions. [2024-10-10 22:29:47,025 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 3983 transitions. Word has length 180 [2024-10-10 22:29:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:47,026 INFO L471 AbstractCegarLoop]: Abstraction has 3138 states and 3983 transitions. [2024-10-10 22:29:47,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 3983 transitions. [2024-10-10 22:29:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-10 22:29:47,029 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:47,029 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:47,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-10-10 22:29:47,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:47,230 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:47,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:47,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1398900206, now seen corresponding path program 1 times [2024-10-10 22:29:47,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:47,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398728913] [2024-10-10 22:29:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:47,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:47,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:47,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398728913] [2024-10-10 22:29:47,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398728913] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:47,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463788048] [2024-10-10 22:29:47,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:47,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:47,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:47,540 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:47,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-10 22:29:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:47,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-10 22:29:47,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:29:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 98 proven. 10 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2024-10-10 22:29:47,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:29:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-10 22:29:48,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463788048] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:48,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:29:48,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14, 8] total 26 [2024-10-10 22:29:48,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18236684] [2024-10-10 22:29:48,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:29:48,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-10 22:29:48,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:29:48,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-10 22:29:48,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2024-10-10 22:29:48,011 INFO L87 Difference]: Start difference. First operand 3138 states and 3983 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:29:48,150 INFO L93 Difference]: Finished difference Result 3265 states and 4138 transitions. [2024-10-10 22:29:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:29:48,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-10-10 22:29:48,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:29:48,154 INFO L225 Difference]: With dead ends: 3265 [2024-10-10 22:29:48,154 INFO L226 Difference]: Without dead ends: 3142 [2024-10-10 22:29:48,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2024-10-10 22:29:48,155 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 49 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:29:48,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 727 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:29:48,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2024-10-10 22:29:48,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 3142. [2024-10-10 22:29:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.268067494428526) internal successors, (3983), 3141 states have internal predecessors, (3983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 3983 transitions. [2024-10-10 22:29:48,204 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 3983 transitions. Word has length 180 [2024-10-10 22:29:48,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:29:48,204 INFO L471 AbstractCegarLoop]: Abstraction has 3142 states and 3983 transitions. [2024-10-10 22:29:48,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:29:48,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 3983 transitions. [2024-10-10 22:29:48,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-10 22:29:48,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:29:48,207 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:29:48,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-10 22:29:48,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:48,408 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:29:48,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:29:48,408 INFO L85 PathProgramCache]: Analyzing trace with hash 607212170, now seen corresponding path program 1 times [2024-10-10 22:29:48,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:29:48,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464988099] [2024-10-10 22:29:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:48,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:29:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:29:48,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:29:48,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464988099] [2024-10-10 22:29:48,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464988099] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:29:48,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21587500] [2024-10-10 22:29:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:29:48,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:29:48,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:29:48,752 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:29:48,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-10 22:29:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:29:48,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-10 22:29:48,859 INFO L278 TraceCheckSpWp]: Computing forward predicates...